[DRE-maint] ruby-cal-heatmap-rails is marked for autoremoval from testing

[Debian testing autoremoval watch]

ruby-cal-heatmap-rails 0.0.1~dfsg-1 is marked for autoremoval from testing on 2015-08-28

It is affected by these RC bugs:
794162: ruby-cal-heatmap-rails: FTBFS: missing build-dep on uglifyjs(?)